(ただし1と2を合せて12のような使い方は出来ません。)
66個の解法が見つかりました。
((2×6)+(6-8))=10
((2×6)-(8-6))=10
((2+(6+8))-6)=10
((2+6)+(8-6))=10
((2+6)-(6-8))=10
((2+8)×(6÷6))=10
((2+8)+(6-6))=10
((2+8)-(6-6))=10
((2+8)÷(6÷6))=10
((2-6)+(6+8))=10
((6×(2+8))÷6)=10
((6×(6÷2))-8)=10
((6×(8-6))-2)=10
((6+(2×6))-8)=10
((6+(2+8))-6)=10
((6+(6+8))÷2)=10
((6+8)+(2-6))=10
((6+8)-(6-2))=10
((6-6)+(2+8))=10
((6-8)+(2×6))=10
((6÷(2÷6))-8)=10
((6÷6)×(2+8))=10
((8+(2+6))-6)=10
((8+(6+6))÷2)=10
((8-6)+(2+6))=10
(2+((6×8)÷6))=10
(2+((6+8)-6))=10
(2+(6×(8÷6)))=10
(2+(6+(8-6)))=10
(2+(6-(6-8)))=10
(2+(6÷(6÷8)))=10
(2+(8×(6÷6)))=10
(2+(8+(6-6)))=10
(2+(8-(6-6)))=10
(2+(8÷(6÷6)))=10
(2-((6-6)-8))=10
(2-((6-8)-6))=10
(2-(6-(6+8)))=10
(6×((2+8)÷6))=10
(6+((2×6)-8))=10
(6+((2+8)-6))=10
(6+(2×(8-6)))=10
(6+(2+(8-6)))=10
(6+(2-(6-8)))=10
(6+(8+(2-6)))=10
(6+(8-(6-2)))=10
(6-((6-2)-8))=10
(6-((6-8)-2))=10
(6-(2×(6-8)))=10
(6-(6-(2+8)))=10
(6-(8-(2×6)))=10
(6÷(6÷(2+8)))=10
(8+((2×6)÷6))=10
(8+((2+6)-6))=10
(8+(2×(6÷6)))=10
(8+(2+(6-6)))=10
(8+(2-(6-6)))=10
(8+(2÷(6÷6)))=10
(8+(6×(2÷6)))=10
(8+(6+(2-6)))=10
(8+(6-(6-2)))=10
(8+(6÷(6÷2)))=10
(8-((6-2)-6))=10
(8-((6-6)-2))=10
(8-(6-(2+6)))=10